What causes twitching of the lower right eyelid and what should be done about it

Right lower eyelid twitching may be caused by physiological factors or pathological conditions, such as conjunctivitis or keratitis. Appropriate treatment methods should be selected based on the underlying cause.

I. Physiological Factors:

1. Sleep deprivation: Prolonged lack of sleep can keep the eye muscles in a constant state of tension, leading to eyelid twitching. It is recommended to maintain regular sleep habits and get adequate rest. Applying warm compresses and gently massaging the eyes may help improve local blood circulation.

2. Eye strain: Excessive use of the eyes—such as prolonged reading, smartphone use, or computer work—can lead to muscle twitching controlled by the facial nerve. Reducing screen time and performing gentle eye massages can help relieve eye fatigue.

II. Pathological Factors:

1. Conjunctivitis: Allergies or infections caused by pathogenic microorganisms (such as bacteria or viruses) may lead to conjunctivitis. Inflammatory substances can irritate the eye, resulting in twitching. Follow medical advice to use antibiotic treatments, such as tobramycin eye drops, levofloxacin eye drops, or erythromycin eye ointment, to reduce infection and alleviate eye discomfort.

2. Keratitis: Wearing contact lenses for extended periods, eye injuries, or infections from bacteria, viruses, or other pathogens may cause keratitis. Inflammation can trigger eyelid spasms. Antiviral medications prescribed by a doctor—such as acyclovir eye drops, ganciclovir eye ointment, or famciclovir eye drops—may be used to suppress viral spread.

In addition, eyelid twitching could rarely be caused by brain tumors. Medical evaluation and treatment as advised by a physician are recommended.